Air is compressed by a compressor from v1 = 1.0 m3/kg to v2 = 0.71 m3/kg in a reversible, isothermal process. the air temperature is maintained constant at 25 oc during this process as a result of heat transfer to the surroundings. air moves through the compressor at a rate of m = 1 kg/s. a)- determine the entropy change of the air per kg of air. b)- what is the power required by the compressor? c)- what is the rate at which entropy leave the compressor?

(a)= -0.098 KJ/kg-K

(b)P= 29.8 KW

(c) = -0.098 KW/K  

Explanation:

mass flow rate= 1 kg/s.

T=25°C

Air treating as ideal gas

(a)

We know that entropy change for ideal gas between two states

Given that this is isothermal process so

= -0.098 KJ/kg-K

(b)

Power required

P= -29.8 KW        (Negative sign means it is compression process.)

(c)

Rate of entropy generation

=1(-0.098)

 = -0.098 KW/K  

hes mad if he says,

explanation:

r!

answer:

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Explanation: